This specimen (TMM M-6922) was made available to the University of Texas High-Resolution X-ray CT Facility for scanning by Dr. Ted Macrini of the American Museum of Natural History. Funding for scanning was provided by a National Science Foundation Dissertation Improvement Grant (DEB-0309369) to Dr. Macrini. Funding for image processing was provided by a National Science Foundation Digital Libraries Initiative grant to Dr. Timothy Rowe of The University of Texas at Austin.